Phosphinimine amido-ether complexes

Patent metadata

Field	Value
Publication number	US-10669355-B2
Application number	US-201916394232-A
Country	US
Kind code	B2
Filing date	Apr 25, 2019
Priority date	Apr 26, 2018
Publication date	Jun 2, 2020
Grant date	Jun 2, 2020

Abstract

Provided in this disclosure are organometallic complexes that contain i) a metal atom selected from Hf and Zr; 2) a phosphinimine ligand; 3) an amido-ether ligand and at least one other ancillary ligand. The use of such a complex, in combination with an activator, as an olefin polymerization catalyst is demonstrated. The catalysts are effective for the copolymerization of ethylene with an alpha olefin (such as 1-butene, 1-hexene, or 1-octene) and enable the production of high molecular weight copolymers (Mw greater than 25,000) with good comonomer incorporation at high productivity.

First claim

What is claimed is:

1. A complex having the formula (PI)(AE)ML 2 , wherein:
I) PI is a phosphinimine ligand defined by the formula:

wherein each R 1 is independently selected from a group consisting of a hydrogen atom; the C 1-30 hydrocarbyl radical, which hydrocarbyl radical is unsubstituted or further substituted by a halogen atom; a C 1-10 alkoxy radical; a C 6-10 aryl or aryloxy radical; an amido radical; a silyl radical; and a germanyl radical;

II) AE is an amido-ether ligand defined by the formula:

wherein:
Q is a bridging group between oxygen, O, and nitrogen, N 2 , and contains one or more atoms selected from the group consisting of Group 13 to 16 elements;
R 2 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group 13 to 17 elements;
R 3 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group 13 to 17 elements; and
wherein the R 2 group optionally joins together with the bridging group Q;

III) each L is an activatable ligand; and
IV) M is a metal selected from the group consisting of Zr and Hf, and wherein N 1 , N 2 and optionally O are bonded to M.

2. An olefin polymerization catalyst system comprising:
A) an organometallic complex according to claim 1 and
B) an activator.

3. The olefin polymerization catalyst system according to claim 2 wherein the activator is selected from the group consisting of an aluminoxane; an ionic activator; and mixtures thereof.

4. A process for the polymerization of olefins comprising contacting one or more C 2 to C 10 alpha olefins with the olefin polymerization catalyst system of claim 2 under polymerization conditions.

5. The process of claim 4 wherein the one or more C 2 to C 10 alpha olefins consists of a) ethylene; and b) one or more olefins selected from the group consisting of 1-butene; 1-hexene; and 1-octene.

Assignees

• Nova Chem Int Sa

Inventors

• Morrison Darryl
• Chisholm P Scott
• Baar Cliff
• Lee Graham
• Smiley-Wiens Janelle

Classifications

• C08F4/64117 Primary

  NNO · CPC title

• C08F210/16

  Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title

• C08F4/6428

  with an aluminoxane, i.e. a compound containing an Al-O-Al- group · CPC title

• C08F110/02

  Ethene · CPC title

• C08F4/65912

  in combination with an organoaluminium compound · CPC title